U.S. patent number 6,217,266 [Application Number 09/382,043] was granted by the patent office on 2001-04-17 for drill guide for drilling long holes in doors.
Invention is credited to Roy E. Bowling.
United States Patent |
6,217,266 |
Bowling |
April 17, 2001 |
Drill guide for drilling long holes in doors
Abstract
A drilling guide or jig for guiding an elongated drill bit for
drilling a long hole through a panel such as a door from one edge
to a point adjacent another edge thereof. The guide is formed by a
rigid, elongated, rectangular base plate defining an elongated slot
and positionable along one edge of the door. A pair of arms are
mounted one on each long side edge of the plate at about the
midpoint thereof and extend generally perpendicularly to the plate.
The arms define at one end a pair of spaced apart jaws extending
from said plate and adapted to hold the plate on the door or panel.
The arms further define a pair of spaced apart support members
extending from the plate opposite to the jaws. A drill guide block
is pivotally mounted between the free ends of the support members
in spaced relation to the plate, and adjustably supports a drill
guide tube extending between the arms. The tube supports and guides
an elongated drill bit for drilling at a selected angle through the
elongated slot in the plate and the panel for producing a long hole
extending generally transversely through the panel.
Inventors: |
Bowling; Roy E. (Lakewood,
CO) |
Family
ID: |
26826626 |
Appl.
No.: |
09/382,043 |
Filed: |
August 24, 1999 |
Current U.S.
Class: |
408/115R;
408/103; 408/88; 408/97 |
Current CPC
Class: |
B23B
47/28 (20130101); B23B 2247/06 (20130101); B23B
2247/10 (20130101); Y10T 408/563 (20150115); Y10T
408/5612 (20150115); Y10T 408/56245 (20150115); Y10T
408/567 (20150115) |
Current International
Class: |
B23B
47/28 (20060101); B23B 47/00 (20060101); B23B
045/14 () |
Field of
Search: |
;408/88,97,103,115R,236 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
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|
|
|
|
|
2645576 |
|
Oct 1990 |
|
FR |
|
2203069 |
|
Oct 1988 |
|
GB |
|
Primary Examiner: Tsai; Henry
Attorney, Agent or Firm: Crandell; Ralph F.
Parent Case Text
CROSS REFERENCE TO RELATED APPLICATION
This application claims the benefit of Provisional Application Ser.
No. 60/128,484, filed Apr. 9, 1999, by Roy E. Bowling, for DRILL
GUIDE FOR DRILLING LONG HOLES IN DOORS.
Claims
What is claimed is:
1. A drilling guide for guiding a drill bit for drilling a long
hole through a panel from one edge to another edge thereof, and
between the sides thereof, said guide comprising:
a rigid, elongated, rectangular base plate positionable along said
one edge, said plate having opposed long sides and opposed faces
and defining an elongated slot through said faces, a pair of arms
mounted one on each long side edge of said plate at about the
midpoint thereof and extending generally perpendicularly to the
faces of said plate, said arms integrally defining a pair of spaced
apart jaws extending from said plate and adapted to secure said
plate to said panel by gripping the sides thereof, said arms
further integrally defining a pair of spaced apart support members
extending from said plate opposite to said jaws, a drill guide
block pivotally mounted between said support members in spaced
relation to said plate, and a drill guide tube adjustably carried
by said block and extending between said arms for supporting and
guiding an elongated drill bit for drilling at a selected angle
through said elongated slot in said plate and said panel for
producing a long hole extending generally transversely through said
panel from said one panel edge to the other.
2. A drilling jig for guiding a drill bit for drilling a long hole
through a panel from one edge to an opposite edge thereof, and
between the sides thereof, comprising:
a rigid, elongated, rectangular base plate positionable along one
of said panel edges, said plate having opposed long sides and
opposed faces and defining an elongated slot through said faces, a
pair of arms mounted one on each long side edge of said plate at
about the midpoint thereof and extending generally perpendicularly
to the faces of said plate, said arms integrally defining a pair of
spaced apart jaws adapted to be placed against said sides of said
panel for holding the jig thereon, said arms further integrally
defining a pair of spaced apart support members on the opposite
side of said base plate from said jaws, a drill guide block
pivotally mounted between said support members and spaced from said
plate, means for securing said block to said support members in a
selected angular relationship with respect thereto, a tubular drill
guide adjustably carried by said block and extending between said
arms for supporting and guiding an elongated drill bit, said block
and tube being positionable at a selected angle, whereby said drill
guide tube guides said drill bit to produce a long hole extending
generally transversely through said panel from one edge thereof to
the other.
3. A drilling jig for guiding a drill bit for drilling a long hole
through a panel from one edge to another edge thereof, and between
the sides thereof, said jig comprising a rigid, elongated,
rectangular base plate positionable along one of said edges, said
plate having opposed long sides and opposed faces and defining an
elongated slot through said faces, a pair of arms mounted one on
each longitudinal side edge of said plate at about the midpoint
thereof and extending generally perpendicularly to the faces of
said plate, said arms integrally defining a pair of spaced apart
jaws adapted to clampingly engage the sides of said panel for
holding said jig thereon, said arms further integrally defining a
pair of spaced apart support members on the opposite side of said
plate from said jaws, a block pivotally mounted between said
support members in spaced relation to said plate, means for
securing said block to said support members in a selected angular
relationship thereto, and a drill bit guide tube adjustably carried
by said block and extending between said arms for supporting and
guiding an elongated drill bit, said block and tube being
positionable at a selected angle with respect to said plate whereby
said drill bit produces a long hole extending generally
transversely through said panel from one edge thereof to the
other.
4. A drilling guide for guiding a drill bit for drilling a long
hole through a panel such as a door from one edge to another edge
thereof, and between the sides thereof, said guide comprising an
elongated, rigid, rectangular base plate positionable along and
against said one edge, said plate defining opposed longitudinal
side edges and opposed surfaces therebetween, said plate further
defining an elongated slot opening into said surfaces for passing a
drill bit, one of said surfaces being adapted for placement against
said one panel edge, a pair of rigid rectangular arms mounted one
on each said plate side edge at about the midpoint thereof and
extending generally perpendicularly to said plate surfaces, at
least one cap screw securing each said arm to the juxtaposed plate
side edge, said arms integrally defining a pair of spaced apart
jaws extending from the surface of said plate adapted to be placed
against said panel edge for engaging opposite sides of said panel
for holding said plate against said one edge of said panel, said
arms further integrally defining a pair of spaced apart support
members extending from the surface of said plate opposite said
panel edge engaging surface, a block pivotally mounted between said
support members and spaced from said plate, means for securing said
block to said support members in a selected angular relationship
thereto, and a drill guide tube adjustably carried by said block
and extending between said arms for supporting and guiding an
elongated drill bit extending and drilling at said selected angle
through said elongated slot and said panel for drilling a long hole
extending generally transversely through said panel from said one
panel edge to the other.
5. A drilling jig for use with an elongated, stiffly flexible drill
bit for drilling a long hole through a door from one edge thereof
to another, and between the sides thereof, said jig comprising:
a rigid, elongated, rectangular plate mountable on one edge of a
door,
means for securing said plate to said door,
said plate defining an elongated slot extending lengthwise
thereof,
at least one rigid, elongated arm secured to said plate and
extending therefrom in a perpendicular relationship thereto, a
support block pivotally mounted on said arm and defining a bore
having an axis lying in a plane perpendicular to said plate,
a drill bit guide tube supported in said bore for angular
adjustment with respect to said plate in a plane perpendicular to
the plane of said plate, an axially extending flat on said guide
tube, and a set screw threadably mounted in said block for
releasably engaging said flat thereby releasable securing said
guide tube in said block bore, whereby a long hole can be drilled
through said door by an elongated drill bit guided by said guide
tube and extending through said elongated drill plate slot.
6. A drilling jig as defined in claim 5, wherein said securing
means comprises screws extending through apertures defined in said
plate into engagement with said door edge.
7. A drilling jig as defined in claim 5 wherein said securing means
comprises a pair of spaced apart clamping jaws extending from said
plate into engagement with said door.
8. A drilling jig as defined in claim 5 comprising two rigid
elongated arms secured to said plate.
9. A drilling jig as defined in claim 8 wherein said arms form
spaced apart clamping jaws for securing said plate to said door.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to drilling tools and more
particularly to drill guides or jigs. More specifically, the
present invention relates to a drilling jig for guiding an
elongated drill bit when drilling a hole through a panel such as a
door from one edge thereof to the opposite edge.
2. Description of the Prior Art
A fixture for use in drilling a hole through a door from one edge
to an opposite edge is shown in U.S. Pat. No. 5,791,834, issued
Aug. 11, 1998, to Raymond E. Zehrung for "Fixture for Drilling a
Longitudinal Hole in a Door".
A long drill bit which is capable of maintaining a desired
penetration angle and path when drilling long holes is shown in
U.S. Pat. No. 4,906,146, issued Mar. 6, 1990, to Roy E. Bowling for
"Axially Self-Aligning Drill Bit". The drill bit has a stiffly
flexible shank with a unique drilling tip that maintains the
desired path and does not walk or deflect therefrom.
OBJECTS OF THE INVENTION
The principal object of the present invention is to provide an
improved drilling jig or guide for guiding a drill bit when
drilling long holes through panels such as doors from one edge to
the opposite edge thereof.
Another object of the invention is to provide a drilling jig or
guide of the foregoing character which is rugged, simple to use,
and accurately directs a drill bit through a door or like panel
from edge to edge and between the surface panels thereof.
SUMMARY OF THE INVENTION
The present invention is a drilling guide or jig for use in guiding
a long, stiffly flexible drill bit when drilling a long hole
through a panel such as a door from one vertical edge to the other
between the spaced side or face panels thereof, such as for
drilling a hole from a hinge area of a door to a lock or latch area
of the door for use in wiring an electric lock.
The jig embodying the invention is formed by a narrow, elongated,
rigid, base plate positionable or mountable on one edge, such as a
vertical edge, of a door or panel. The plate defines opposed
longitudinal side edges, shorter end edges, and opposed surfaces
therebetween. The plate further defines an elongated slot opening
into said surfaces for passing a drill bit. One of the surfaces is
adapted for placement against an edge of the door, usually in a
hinge area when drilling a hole for the installation of wiring for
an electric lock.
A pair of elongated rigid arms are mounted one on each plate side
edge at about the midpoint thereof and extend generally
perpendicularly to the plate surfaces. At least one cap screw
secures each arm to the juxtaposed plate edge. The arms define a
pair of spaced jaws extending from the surface of the plate adapted
to be placed against the panel edge. The jaws engage opposite sides
of the door panel for holding the jig securely against the door.
The arms further define a pair of spaced apart support members
extending from the surface of said plate opposite the edge engaging
surface. A drill guide supporting block is pivotally mounted
between the support members at a point spaced from the plate. The
block is secured to the arms by cap screws when positioned in a
selected angular relationship thereto. A drill guide tube is
adjustably carried by said block and extends between the arms for
supporting and guiding an elongated drill bit extending and
drilling at said selected angle through the elongated slot for
producing a long hole extending transversely through the panel from
one panel edge to the other at the selected angle.
DESCRIPTION OF THE DRAWINGS
FIG. 1 is a front elevation view of a door through which a long
hole is to be drilled for receiving a wire.
FIG. 2 is a perspective view of the door shown in FIG. 1 with a
hinge and lock mechanism in exploded relation.
FIG. 3 is a view similar to FIG. 2 but with a drilling guide or jig
embodying the present invention mounted in drilling position
thereon.
FIG. 4 is a view similar to FIG. 3 but showing a drill in position
for drilling a hole from the hinge area to the lock area.
FIG. 5 is an exploded view of a drill guide or jig embodying the
present invention.
FIG. 6 is a right hand perspective view of a drilling guide
embodying the present invention.
FIG. 7 is a left hand perspective view thereof.
FIG. 8 is a perspective view similar to FIG. 5 but with the
drilling guide positioned for drilling at an angle with respect to
the door edge.
FIG. 9 is a section view taken substantially in the plane of line
9--9 on FIG. 3.
FIG. 10 is a section view taken substantially in the plane of line
10--10 on FIG. 3.
FIG. 11 is a section view similar to FIG. 9 and showing a drill bit
in starting position.
FIG. 12 is a section view similar to FIG. 11 and showing a drill
bit having drilled a long hole through a door.
FIG. 13 is a horizontal section view through a door and door frame
showing a wiring hole drilled through the same.
DESCRIPTION OF THE PREFERRED EMBODIMENT
The present invention is an improved drilling jig or guide 10
finding particular but not necessarily exclusive utility for
guiding a long, stiffly flexible drill bit 11 when drilling a long
hole 12 through a door 13 from one vertical edge 14 to the other or
opposite vertical edge 15 between the face or side panels 16,18.
Such a jig 10 is useful, for example, when drilling a hole from the
area of a hinge 19 on one edge 14 of a door to the area of a lock
or latch 20 on the opposite edge 15 for use in connecting a wires
21, 22 to convert the lock 20 to an electric lock.
The improved drill guide or jig 10 embodying the present invention
incorporates an elongated, rigid base plate 24 adapted to be placed
on and held against an edge 14 of the door 13. The base plate 24
defines elongated, opposed side edges 25,26, opposed end edges
27,28, and opposed plate surfaces or sides 29,30, extending
therebetween. For passing the drill bit 11, an elongated slot 31 is
defined in the plate 24 opening therethrough between the plate
surfaces 29,30. The plate 24 supports a pair of transversely
extending jaw arms 32,33 mounted thereon one on each side edge
25,26 thereof in normal or perpendicular relationship thereto. The
jaw arms 32,33 are secured to the plate 24 by machine or cap screws
35, one of said arms 33 being secured by two cap screws 35 and the
other arm 32 by one cap screw 35, thereby to prevent the jaw arms
from pivoting or swinging with respect to the base plate 24. A
washer 36 is desirably used with each cap screw.
The jaw arms 32,33 extend away from one side or surface 29 of the
base plate 24 and form jaws 38,39 for engaging and gripping the
side panels 16,18 of a door 13 adjacent to the edge 14 on which the
jig 10 is mounted for drilling. In order to prevent marring of the
door panels, protective pads 40 are provided on the faces of the
jaws 38,39. To further secure the base plate to the door, the plate
may include holes or apertures 41 for receiving temporary mounting
screws 42.
Each of the arms 32, 33 extends away from the base plate 24 surface
30 opposite the jaws and support at their outer ends 44,45 an
angularly adjustable drill guide assembly 46 (FIGS. 5-8). The drill
guide assembly 46 is formed by a guide block 48 which is mounted
between the ends 44,45 of the arms 32,33 and secured thereto by a
pair of cap screws 49 extending through the arms into threaded
engagement with the block 48. By loosening the cap screws 49, the
angular position of the guide block 48 can be adjusted by pivoting
the block relative to the arms. The block 48 is then secured in the
desired angular position by tightening the cap screws 49. The guide
block 48 in turn defines a bore 50 in which is supported a drill
guide tube 51 extending through the block 48 between the arms 32,
33. To this end the axis of the guide block bore 50 extends
transversely to the axis of the mounting screws 49, and lies in a
plane parallel to the planes of the arms, and perpendicular to the
plane of the base plate 24.
The drill guide tube 51 is an elongated sleeve or tube of hardened
steel and defines a central bore 52 coaxial with the bore 50 of the
block 48 and of a diameter sufficient to slidably and rotatably
receive the shank 54 of the drill bit 11 thereby to support the bit
and guide the same during the drilling operation. The tube 51 is of
a length sufficient to adequately support the shank of a stiffly
flexible drill bit of the character described in U.S. Pat. No.
4,906,146, or other drill bit configuration suitable for drilling
long holes.
To enable the position of the inserted drill guide tube 51 to be
adjusted longitudinally with respect to the guide block 48, the
block includes a set screw 55 extending into the guide block bore
50 for biting into a longitudinal flat 56 machined on the surface
of the guide tube 51 for holding engagement with the same.
In one illustrative embodiment of the present invention, the base
plate 24 is a rigid plate of a material such as aluminum, having a
width equal to the width of an average door or about 13/4 in. (4.5
cm.), a thickness of about 1/2 in. (1.3 cm.) and a length of about
13 inches (31.5 cm.). The longitudinal elongated drill receiving
slot 31 is about 10 inches (27.4 cm.) in length and about 5/8 inch
(1.6 cm.) in width. The arms 32,33 are rigid aluminum plates about
3/16 in..times.2 in..times.8 in. (0.5 cm..times.5.08 cm..times.24.4
cm.). The tube block 48 is aluminum and has the dimensions 13/4
in..times.2 in..times.2 in. (4.5 cm..times.5.08 cm..times.5.08
cm.). The drill guide tube 51 is a hardened steel tube about 8 in.
(24.4 cm.) long, having an outside diameter of about 5/8 in. (1.6
cm.) and a 1/4 in. (0.64 cm.) bore. The angle range for the drill
guide tube 51 is from about 45.degree. above the horizontal to
about 45.degree. below the horizontal.
In use, the drill guide assembly 46 is positioned with the drill
guide tube 51 at the desired angle, and a drill bit 11 such as a
drill bit of the type shown in U.S. Pat. No. 4,906,146 inserted
therein, along a door edge adjacent to the hinge area from which
the desired hole 12 is to be drilled. The cap screws 35 are tightly
secured to hold the jig securely on the door 13. A long hole 12 is
then drilled at the desired angle through the door 13 from one edge
14 to the other 15 between the door faces. Appropriate wiring can
then be inserted through the hole 12, for example to wire an
electric lock.
For certain applications such as extra thick doors or panels or in
cramped or corner applications or other applications in which is
not feasible to remove the door from the door frame and the frame
interferes with the mounting of the drilling guide or jig on the
hinge edge of the door, one of the arms may be omitted and the base
plate temporarily fastened with screws to the panel or door edge.
As a further alternative the jaw end 38 or 39 of either or both of
the arms 32 or 33 may be omitted and reliance placed on temporarily
screwing the base plate 30 to the panel edge when drilling the long
hole.
While a certain illustrative embodiment of the present invention
has been shown in the drawings and described above in detail, it
should be understood that there is no intention to limit the
invention to the specific form disclosed. On the contrary the
intention is to cover modifications, alternative constructions,
equivalents, and uses falling within the spirit and scope of the
invention as expressed in the appended claims.
* * * * *